Roku wire free doorbell - Screw sizes?

What size are the screws that come with the Wire free video doorbell? I see it comes with a mounting plate that you both need to adhese to the doorframe and screw in. The website says that it comes with small screws and long screws, but it doesn't specify how big they are or which screws are needed for which parts. I need approval from my landlord to install it on my townhome and I want to find out before buying but this information seems to not exist anywhere online.